FPGA и CPLD
Товары (6666)
EPM3128ATI10010N - MAX 3000A CPLD 128MC 100TQFP | Altera
The Altera EPM3128ATI10010N is a member of the MAX 3000A family of high-performance, low-cost CMOS EEPROM-based Complex Programmable Logic Devices (CPLDs), featuring 128 macro cells, 2,500 usable gates, and 80 user I/Os in a 100-pin TQFP package. The device operates at a 3.3 V core supply with a maximum internal frequency of 98 MHz and a pin-to-pin propagation delay of 10 ns (-10 speed grade), supporting commercial temperature grades (0C to +70C). Built on a non-volatile EEPROM process, the MAX 3000A delivers instant-on operation without external configuration memory. A Complex Programmable Logic Device (CPLD) is a non-volatile digital IC that integrates multiple PAL/GAL-style logic blocks on a single die, connected through a programmable interconnect matrix. Within the broader taxonomy, a CPLD sits between small SPLDs (single PAL/GAL equivalents) and FPGAs, offering predictable timing, deterministic propagation delays, and instant-on behavior. The MAX 3000A family uses Altera's classic MAX architecture with EEPROM memory cells, providing 100% tested programming retention and 3.3 V in-system programmability (ISP) via IEEE 1149.1 JTAG. Key features include 128 macro cells distributed across 8 Logic Array Blocks (LABs) of 16 macro cells each, 80 user I/O pins, JTAG boundary-scan test support, and PCI-compliant I/O buffers for the -5, -6, -7, and -10 speed grades. The device supports multi-volt core operation from 3.0 V to 3.6 V and I/O bank voltages of 1.8 V, 2.5 V, or 3.3 V, allowing flexible mixed-voltage interfacing. The MAX 3000A employs a CMOS EEPROM process with four-product-term macro cell logic, programmable interconnect, and per-pin output enable control. The architecture guarantees fixed propagation delays independent of routing paths, which simplifies static timing closure for glue-logic and bus-interface functions. Designers benefit from deterministic timing ideal for address decoding, state-machine control, and bus arbitration. Typical applications include bus-interface bridging, peripheral glue logic in microcontroller systems, address decoding, I/O expansion, and legacy system redesigns requiring drop-in CPLD replacement. It is also widely used in industrial control boards and telecom infrastructure where predictable timing and instant-on non-volatile configuration are essential. When designing with the EPM3128ATI10010N, ensure that I/O bank supply voltages match the logic levels of connected peripherals. JTAG ISP programming requires the TCK, TMS, TDI, and TDO pins to be reserved on the PCB, and unused I/Os should be left floating or driven to a defined state through the Quartus MAX+PLUS II software. This page synthesizes distributor pricing, pin-compatible drop-in alternatives from the same MAX 3000A family, and practical design notes not consolidated in the original datasheet.
EPM3128ATI144-10 - MAX 3000A CPLD 128 Macro 98 I/O TQFP-144 | Intel/Altera
The Intel/Altera EPM3128ATI144-10 is a high-performance, low-cost CMOS EEPROM-based Complex Programmable Logic Device (CPLD) from the MAX 3000A family, providing 2,500 usable gates, 128 macro cells, and 98 user I/Os in a 144-pin TQFP industrial-temperature-grade package with 10 ns pin-to-pin delay and a 3.3-V core supply. A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that combines multiple PAL/GAL-style logic blocks with a central interconnect matrix, providing deterministic timing and instant-on behavior. CPLDs occupy the middle ground between small logic ICs (gates, muxes, flip-flops) and larger FPGAs, making them ideal for glue-logic, bus-interface bridging, power-up sequencing, and state-machine replacement. The MAX 3000A family sits within the broader hierarchy of programmable logic devices (PLDs) -> CPLDs -> non-volatile logic devices -> digital semiconductors. Key features of the EPM3128ATI144-10 include 128 macro cells distributed across 8 Logic Array Blocks (LABs), 96 user I/Os (note: 96 is the canonical MAX 3000A count for the 144-pin TQFP; the 98 figure cited on some aggregator pages reflects legacy Altera documentation), in-system programmability (ISP) through the IEEE 1149.1 JTAG interface, and PCI-SIG-compliant I/O drivers supporting the PCI Local Bus Specification, Revision 2.2 in the -4, -5, -6, -7, and -10 speed grades. The device operates from a 3.3-V supply with 5-V-tolerant I/O available on certain pins. Architecturally, the device uses a uniform interconnect matrix (the Programmable Interconnect Array, or PIA) that routes signals between LABs with predictable, fixed delays, eliminating the timing-closure variability of FPGA fabrics. The EEPROM configuration memory provides true non-volatile storage, so the part powers up in a known functional state without external boot memory. Counter frequencies reach 192.3 MHz in the -7 speed grade and 98 MHz typical for the -10 grade. Typical applications include industrial control glue logic, parallel bus interface bridging (e.g., address decoding between a microcontroller and an SRAM bank), power-sequencing controllers for multi-rail systems, peripheral expansion logic, and PCI-bus glue functions. The wide operating temperature range (-40C to +85C industrial) makes it suitable for factory automation, automotive body electronics, and outdoor telecommunications equipment. When designing with this part, allocate the JTAG pins (TCK, TMS, TDI, TDO) carefully because they are dedicated for boundary-scan and ISP. Decouple each VCCINT/VCCIO pair with a 0.1 uF ceramic capacitor placed within 5 mm of the package pin, and use a ground plane on layer 2 for return-current continuity. This page synthesizes verified distributor pricing, drop-in alternative cross-references, and practical PCB-layout design notes for the EPM3128ATI144-10 that are not assembled in the manufacturer datasheet alone.
EPM3128ATI144-10AA - 128-Macrocell MAX 3000A CPLD, 10ns, 144-TQFP | Intel
The Intel (formerly Altera) EPM3128ATI144-10AA is a 128-macrocell, 2,500-gate CMOS EEPROM-based Complex Programmable Logic Device (CPLD) from the MAX 3000A family, supplied in a 144-pin TQFP package with a 10 ns pin-to-pin propagation delay (tPD). The part supports in-system programmability (ISP) via a 3.3 V JTAG interface, operates from 3.0 V to 3.6 V, and provides 96 user I/O pins suitable for glue-logic, bus-interface, and state-machine consolidation in industrial and telecom designs. What is a CPLD? A Complex Programmable Logic Device is a non-volatile programmable logic IC that combines multiple PAL-like macrocell arrays on a single die, providing deterministic timing, predictable pin-to-pin delays, and instant-on behavior that FPGAs cannot match. Within the programmable-logic hierarchy, a CPLD sits between simple SPLDs (PAL/GAL) and high-density FPGAs: it offers higher logic density than SPLDs and faster, more deterministic timing than FPGAs, making it ideal for I/O expansion, address decoding, and bus-interface bridging. The MAX 3000A family is Intel's classic 3.3 V CPLD line, widely used as a 'glue logic' replacement for discrete TTL/CMOS parts. Key features of the EPM3128ATI144-10AA include 128 macrocells organized in 8 Logic Array Blocks (LABs), 2,500 usable gates, 96 user I/O pins, 10 ns maximum pin-to-pin delay, and a 98 MHz internal fMAX. The device supports IEEE 1149.1 JTAG boundary-scan testing and ISP through the JTAG pins, eliminating the need for a separate programmer. MultiVolt I/O allows interfacing with 1.5 V, 1.8 V, 2.5 V, and 3.3 V devices without external level shifters. Architecturally, the MAX 3000A uses a classic EEPROM-based AND-plane / OR-plane structure with per-macrocell flip-flops, programmable interconnect, and a global clear/clock network. Each macrocell contains a programmable AND/OR array feeding a flip-flop with selectable polarity, clear, clock-enable, and preset. This architecture delivers the deterministic tPD that makes MAX 3000A devices preferred for synchronous state machines, address decoding, and asynchronous interface logic where designers need to know the worst-case delay before place-and-route. Typical applications include bus-interface bridging (PCI to local bus, ISA, VME), address decoding and chip-select generation, glue-logic consolidation in 3.3 V systems, state-machine controllers, I/O expansion for microcontrollers, and asynchronous reset distribution. The wide operating temperature range (-40 °C to +85 °C industrial grade, indicated by the 'I' suffix) makes it suitable for industrial-control and telecom equipment. Design considerations: ensure the 3.3 V supply is well-decoupled with 0.1 µF and 10 µF capacitors close to the VCCINT and VCCIO pins; reserve JTAG pins TCK, TMS, TDI, TDO for ISP and boundary-scan if used; and remember that the 'AA' suffix denotes the industrial temperature grade. The MAX 3000A family is mature; verify long-term availability before designing into new products, as Intel/Altera has migrated many customers to MAX II/V CPLDs. This page synthesizes distributor pricing from DigiKey/Heisener/Jotrin, verified same-family drop-in alternatives, and practical design guidance for industrial glue-logic and address-decoding applications - content not aggregated on any single distributor page.
EPM3128ATI144-10N - 128-Macrocell MAX 3000A CPLD, 10ns | Intel / Altera
The Intel / Altera EPM3128ATI144-10N is a 128-macrocell, 96-I/O member of the MAX 3000A family of cost-optimized, EEPROM-based 3.3 V Complex Programmable Logic Devices (CPLDs). It is supplied in a 144-pin TQFP (Industrial temperature grade) and offers a 10 ns pin-to-pin propagation delay with a maximum internal clock frequency of approximately 98 MHz. The device integrates non-volatile EEPROM configuration cells, providing instant-on operation at power-up without an external boot PROM. A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic IC that sits in the hierarchy between discrete logic gates (PAL/GAL) and higher-density FPGAs. Architecturally, the MAX 3000A family is built on the classic MAX architecture, which arranges Logic Array Blocks (LABs) of 16 macrocells each, interconnected by a continuous, fast Programmable Interconnect Array (PIA). This PIA provides predictable, fixed propagation delays that are independent of routing, making timing analysis straightforward - one of the key reasons CPLDs are favored for glue logic, bus decoding, and state-machine control. Key features of the EPM3128ATI144-10N include 128 macrocells (2.5K typical gates), 96 user I/Os, in-system programmability (ISP) compliant with IEEE Std. 1532, JTAG boundary-scan support, and multi-volt VCCIO allowing output banks to operate at either 3.3 V or 2.5 V for mixed-voltage interfacing. The device includes a built-in Joint Test Action Group (JTAG) interface for both ISP and IEEE 1149.1 boundary-scan test. The 10 ns speed grade places this part in the mainstream, general-purpose CPLD tier. Typical applications for the EPM3128ATI144-10N span glue-logic integration, address decoding and bus interfacing in microcontroller systems, state-machine and sequencer design, I/O expansion, power-supply sequencing and supervisory control, and legacy system upgrades where a non-volatile, instant-on logic device replaces discrete 74-series logic. When designing with this CPLD, note that the 144-pin TQFP package requires 0.5 mm pitch PCB layout. Designers should provide a solid ground plane, multiple decoupling capacitors (0.1 uF per VCC pin group), and use the Quartus II (or Quartus Prime) toolchain for design entry, fitting, and ISP programming. Industrial temperature grade is supported. This page synthesizes distributor pricing, pin-compatible drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, giving engineers a single source for sourcing and substitution decisions.
EPM3128ATI144-5N - 128-Macrocell 2.5K CPLD MAX 3000A | Altera
The Altera (now Intel Programmable Solutions Group) EPM3128ATI144-5N is a 128-macrocell, 2,500-gate Complex Programmable Logic Device (CPLD) from the MAX 3000A family, packaged in a 144-pin TQFP and qualified for industrial temperature operation. It delivers 192.3 MHz maximum operating frequency with a 5.0 ns pin-to-pin propagation delay, supports 96 user I/O lines, and operates from a 3.3 V core supply with 3.0 V to 3.6 V tolerance. The device integrates in-system programmability through JTAG BST and is built on a 0.30 um CMOS EEPROM process. What is a CPLD? A Complex Programmable Logic Device is a non-volatile, instantly-on programmable logic IC that combines multiple PAL-style macrocell arrays on a single die with a central interconnect matrix. CPLDs sit in the broader hierarchy between simple SPLDs (like the classic 22V10) and larger FPGAs. They offer deterministic, fixed timing (predictable tPD regardless of routing), low static power, and instant boot from on-chip EEPROM - making them the workhorse glue-logic and bus-interface solution in industrial, telecom, and consumer designs. The MAX 3000A family is Altera's classic 3.3 V EEPROM-based CPLD line. Key differentiating specifications of the EPM3128ATI144-5N include 128 macrocells backed by 2,500 usable gates, 192.3 MHz fMAX with 5.0 ns tPD, in-system programmability via JTAG boundary-scan test, and full IEEE 1149.1 boundary-scan support. Compared to larger FPGAs, the EPM3128ATI144-5N draws standby currents measured in microamps and wakes up configured in under 1 ms. Technically, the device exposes 96 user I/Os (the remaining package pins are power, ground, JTAG, and configuration), supports 3.3 V LVCMOS/LVTTL I/O with 5.0 V tolerant inputs, and includes four dedicated input clocks with global distribution. The non-volatile EEPROM configuration cell array eliminates external boot PROMs. Typical applications include industrial control and factory-automation glue logic, telecommunications backplane bus bridging (PCI, ISA, VME), consumer electronics control logic, white-goods and appliance controllers, and legacy system replacements where 5 V-tolerant input tolerance is required. Designers select this part when deterministic timing, instant-on behavior, and small board footprint outweigh the need for high logic density. When designing with the EPM3128ATI144-5N, observe the 3.0 V to 3.6 V supply rail tolerance and decouple each VCCIO/VCCINT pin with a 0.1 uF ceramic capacitor placed within 5 mm of the pin. The TQFP-144 thermal pad (when present on the package variant) should be soldered to a continuous ground plane for improved theta_JA. This page synthesizes distributor pricing, drop-in MAX 3000A / MAX 7000A alternatives, and practical design notes not found in the manufacturer datasheet - including thermal, JTAG, and 5 V-mixing considerations relevant to engineers migrating 5 V designs to 3.3 V.
EPM3128ATI144-7N - 128 Macrocell CPLD, 129.9MHz, 3.3V | Altera MAX 3000A
The Altera EPM3128ATI144-7N is a 128-macrocell, 2.5K-gate Complex Programmable Logic Device (CPLD) from the MAX 3000A family, operating at a core supply of 3.3V with a maximum internal clock frequency of 129.9 MHz, housed in a 144-pin TQFP package. The MAX 3000A family is built on a CMOS EEPROM process that delivers non-volatile in-system programmability via JTAG (IEEE 1149.1 boundary-scan), so configuration is retained across power cycles without an external boot PROM. The device supports up to 96 user I/O pins, four logic array blocks (LABs), and 128 macrocells organized across the LABs with a programmable interconnect array (PIA) routing signals globally. What is a CPLD? A Complex Programmable Logic Device is a non-volatile programmable logic IC that sits between simple PLDs and FPGAs in the programmable logic hierarchy. A CPLD contains multiple macrocells - each typically implementing a sum-of-products or look-up-table based logic function with a flip-flop - wired together through a central interconnect. Compared to an FPGA, a CPLD has fewer logic resources but offers deterministic, near-zero propagation delay (often measured in nanoseconds), lower cost per I/O, instant-on behavior, and high tolerance for harsh industrial environments. In the broader taxonomy, the EPM3128 belongs to: programmable logic device -> CPLD -> MAX 3000A family -> Altera/Intel programmable solutions. Key features include 7.5 ns pin-to-pin propagation delay (the "-7" speed grade), in-system programmability (ISP) via JTAG, 3.3V core VCCINT with 3.3V or mixed 2.5V/1.8V LVTTL/LVCMOS I/O capability through banked VCCIO rails, and a MultiVolt I/O interface that allows interfacing to 5.0V, 3.3V, 2.5V and 1.8V devices. Built-in JTAG boundary-scan test (BST) circuitry conforms to IEEE Std 1149.1, supporting both manufacturing test and in-field reprogramming. Each macrocell provides configurable D, T, JK, or SR flip-flop operation, programmable clear/preset, and three product-term configurations. Typical applications include bus-interface glue logic for 32-bit microprocessors, address decoding and chip-select generation, state-machine controllers for industrial automation, peripheral expansion in embedded designs, and legacy-system modernization where high-speed deterministic logic must replace discrete 74-series TTL. The 144-pin TQFP package provides 96 user I/O and a 0.5 mm pitch suitable for both hand-prototyping and high-volume SMT production. Designers should observe Altera application-note recommendations for JTAG chain management, multi-voltage I/O bank setup, and decoupling (at least one 0.1 uF and one 10 uF bulk cap per supply pin pair) when migrating designs from MAX 7000 to MAX 3000A.
EPM3256AFC256-10 - 256-Macro CPLD MAX 3000A | Intel / Altera | FBGA-256
The Intel (formerly Altera) EPM3256AFC256-10 is a 256-macrocell CMOS EEPROM-based Complex Programmable Logic Device (CPLD) from the MAX 3000A family, housed in a 256-ball Fine-Line BGA (FBGA-256) package. It delivers up to 161 user I/Os, a 10 ns pin-to-pin propagation delay, and operates from a 3.3 V supply with 5.0 V tolerant I/O capability for mixed-voltage system integration. A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that combines multiple PAL/GAL-like macrocell arrays on a single chip with a programmable interconnect matrix. CPLDs sit between discrete logic gates (74HC series) and FPGAs in the programmable logic hierarchy: they offer deterministic, fast (single-clock-cycle) propagation delays, in-system programmability via JTAG, and instant-on configuration from on-chip EEPROM, making them ideal for glue-logic, bus interfacing, and state-machine replacement. Key features of the EPM3256AFC256-10 include 5,000 usable gates, 16 logic array blocks (LABs) of 16 macrocells each, a global ClockTree with three global clock pins, and 3.3-V in-system programmability (ISP) through the IEEE Std. 1149.1 JTAG interface. The -10 speed grade provides a 10 ns tPD and an internal fCNT of up to 95.2 MHz, suitable for PCI Local Bus Specification Revision 2.2-compliant designs in the -4, -5, -6, -7, and -10 grades. The device is built on a 0.30 µm CMOS EEPROM process and supports multi-voltage I/O operation, allowing 5.0 V devices to drive 3.3 V devices with proper pull-up configuration. Its non-volatile EEPROM cells mean the device configures in microseconds without an external boot PROM, supporting instant-on behavior critical for power-supply sequencing and safety-critical applications. Typical applications include PCI bus interface glue logic, industrial control boards, address decoding and bus arbitration in embedded systems, peripheral expansion bridges, and LED display multiplexing. Its 161 I/Os make it a flexible replacement for multiple discrete 74-series logic packages, reducing board area and BOM count. When designing with the EPM3256AFC256-10, pay close attention to FBGA-256 PCB layout: a 1.0 mm pitch BGA requires laser-via or microvia PCB technology and four to six PCB layers for signal escape. Decoupling requires 0.1 µF and 10 µF capacitors placed within 5 mm of each supply pin, with a continuous ground plane beneath the package for thermal dissipation. This page synthesizes distributor pricing, FBGA-256 drop-in alternatives, and practical PCB layout notes not consolidated in the legacy Altera MAX 3000A datasheet.
EPM3256AFC256-10N - 5K Gate 256-Macro MAX 3000A CPLD | Altera
The Altera (now Intel) EPM3256AFC256-10N is a high-performance, low-cost CMOS EEPROM-based Complex Programmable Logic Device (CPLD) from the MAX 3000A family, delivering 5,000 usable gates and 256 macrocells in a 256-pin FineLine BGA package. It offers a 10 ns pin-to-pin propagation delay and counter frequencies up to 227.3 MHz, while integrating a MultiVolt I/O interface that lets the 3.3 V core drive 5.0 V, 3.3 V, and 2.5 V logic levels without external level shifters. The device provides 161 usable user I/O pins, suiting bus-intensive glue-logic, interface bridging, and decoder/encoder consolidation. A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that combines multiple PAL/GAL-style macrocell arrays with a central interconnect matrix. CPLDs are positioned below FPGAs in the programmable logic taxonomy (CPLD -> PLD -> programmable logic -> semiconductor) and are typically chosen for deterministic timing, instant-on from non-volatile configuration, and high I/O count at low cost. The MAX 3000A family is built on an EEPROM process, meaning the configuration is retained even after power is removed - a key advantage over SRAM-based FPGAs that need an external boot PROM. Key differentiating features include 3.3 V in-system programmability (ISP) via IEEE 1532 / JTAG, four Joint Test Action Group (JTAG) pins for boundary-scan testing, and built-in PCI-SIG PCI Local Bus Specification Revision 2.2 compliance at the -10 speed grade. The device also includes programmable security bits to protect user designs and supports open-drain output options for bus-architecture signaling. Compared to smaller MAX 3000A devices such as the EPM3128A, the EPM3256A doubles the macrocell count to 256 and pushes the user I/O count to 161 - enough for parallel bus interfaces, glue logic consolidation, and power-up sequencer replacement. Typical applications include peripheral bus decoding (PCI/ISA/address-latch enable), power-on reset and sequencer logic, high-speed address decoding for microprocessors and DSPs, glue-logic integration in telecom/networking line cards, industrial control boards, and legacy replacement of discrete 74-series TTL on industrial motherboards. Its non-volatile, deterministic-timing architecture is also favored in safety-relevant industrial designs. Designers should plan JTAG chain topology before PCB layout, as the four JTAG pins (TDI, TDO, TMS, TCK) must be brought to a header for ISP. Decoupling follows Altera's recommendation of 0.1 uF and 0.01 uF capacitors placed close to each VCC/GND pair, with separate analog/digital ground returns where mixed-signal devices share the board. This page consolidates distributor pricing, drop-in alternative cross-references, and PCB-level design guidance beyond what is found in the bare Altera datasheet - giving engineers a single place to evaluate sourcing, lifecycle risk, and design-in trade-offs for legacy MAX 3000A designs.
EPM3256AFC256-7 - MAX 3000A CPLD, 256 Macro Cells, BGA-256 | Altera
The Altera EPM3256AFC256-7 is a member of the MAX 3000A family of high-performance, low-cost CMOS EEPROM-based Complex Programmable Logic Devices (CPLDs), housed in a 256-ball FineLine BGA (FBGA-256) package. It delivers 256 macro cells with 161 user I/Os, supports pin-to-pin logic delays as low as 4.5 ns, and sustains counter frequencies up to 227.3 MHz. The device core operates at 3.3 V, while the MultiVolt I/O interface is compatible with 5.0-V, 3.3-V, and 2.5-V logic levels, enabling flexible mixed-voltage system designs. A Complex Programmable Logic Device (CPLD) is a non-volatile programmable logic device that combines multiple PAL/GAL-like logic blocks on a single chip with a centralized interconnect. CPLDs sit between simple glue-logic ICs (small-scale SPLDs) and high-density FPGAs in the programmable logic hierarchy, offering deterministic pin-to-pin timing, instant-on behavior from EEPROM configuration, and low power consumption. The MAX 3000A architecture (CPLD -> programmable logic -> digital IC -> semiconductor) is particularly suited for bus decoding, state-machine control, and address-mapping functions where predictable timing is critical. Key features of the EPM3256AFC256-7 include 10,000 usable gates, IEEE Std. 1532-compliant 3.3-V in-system programmability (ISP) that supports concurrent programming across multiple PLD vendors, JTAG boundary-scan testing, and open-drain output option for flexible bus interfacing. The 161 available user I/Os provide extensive connectivity for high-pin-count designs, and the 256-ball FBGA package supports fine-pitch surface-mount PCB layouts typical of high-density logic integration. The device is built on a 0.30 µm CMOS EEPROM process, providing non-volatile storage of the configuration bitstream. With 256 macro cells partitioned across 16 logic array blocks (LABs) and a programmable interconnect array (PIA), the EPM3256AFC256-7 can implement combinational logic, registered logic, and small state machines. Typical propagation delay is specified at 4.5 ns, making it suitable for high-speed control applications. Typical applications include bus-interface bridging in telecommunications equipment, address decoding in embedded systems, and glue-logic replacement in industrial control. It is widely used in legacy systems, manufacturing automation controllers, and PCI/ISA bus designs where deterministic timing and 5-V tolerance are required. The commercial 0 °C to 70 °C operating range fits office and laboratory environments. When designing with the EPM3256AFC256-7, ensure the FBGA-256 PCB footprint matches the JEDEC MS-034 ball-map standard. Decoupling capacitors (0.1 µF) should be placed close to each VCC pin, and JTAG chain routing should follow IEEE 1149.1 guidelines for reliable ISP programming. Designers migrating to newer designs should evaluate MAX II or MAX V CPLDs as modern equivalents with lower power consumption.
EPM3256AFI256-10 - 256-Macrocell CPLD, 10ns, FBGA-256 | Intel
The Intel EPM3256AFI256-10 is a 256-macrocell high-performance, low-cost CMOS EEPROM-based Complex Programmable Logic Device (CPLD) from the MAX 3000A family, housed in a 256-ball FineLine BGA package with industrial-grade temperature rating. It delivers 10ns pin-to-pin propagation delay, 161 user I/Os, and 3.3V in-system programmability (ISP) through the IEEE Std. 1149.1 JTAG interface. A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that sits between simple SPLDs/GALs and FPGAs in the programmable logic hierarchy (SPLD -> CPLD -> FPGA -> programmable logic -> semiconductor). It uses a combination of AND/OR macrocell fabric and a predictable interconnect network to implement glue logic, interface bridging, and state-machine control functions with deterministic, fixed timing - making it ideal for designs that need deterministic sub-100ns response without FPGA configuration overhead. Key features of the EPM3256AFI256-10 include MultiVolt I/O supporting 5.0V, 3.3V, and 2.5V logic interfaces, 5ns PCI-compliant timing in faster speed grades, 16 macocells per Logic Array Block (LAB) with 256 total macrocells, and a JTAG-compliant boundary-scan test interface. The MAX 3000A architecture shares the same JTAG, ISP, and 4-pin configuration protocols used across the broader MAX family, simplifying design reuse. The FineLine BGA-256 package provides high I/O density (161 user I/Os) for space-constrained systems, while the EEPROM process technology guarantees 100 program/erase cycles and 20-year data retention without external boot memory. Typical applications include PCI bus interface glue logic, memory and processor address decoding, bus-width adaptation (e.g., 8-bit to 32-bit bridging), high-speed state-machine control, and power-sequencing logic in multi-rail systems. The deterministic timing makes it well-suited for industrial control, telecom line-card interfaces, and legacy peripheral replacement. When designing with the EPM3256AFI256-10, ensure the I/O bank supply rails match the logic-level targets (VCCIO for output drive, VCCINT for core) and respect the device's 3.3V core requirement. Use Quartus II or MAX+PLUS II for design entry; legacy designs may continue using MAX+PLUS II for source compatibility. This page synthesizes distributor stock, drop-in MAX 3000A family alternatives, and practical design notes not consolidated on the manufacturer product page or single distributor listing.
EPM3256AQC208-10 - MAX 3000A CPLD 256 Macrocells 10ns 208-PQFP | Intel / Altera
The Intel / Altera EPM3256AQC208-10 is a member of the MAX 3000A family of high-performance, low-cost CMOS EEPROM-based Complex Programmable Logic Devices (CPLDs) housed in a 208-pin Plastic Quad Flat Pack (PQFP) package. Built on Altera's classic MAX architecture, this device delivers 256 macrocells, 161 user I/Os, and 5,000 usable gates with pin-to-pin propagation delays of 10 ns and internal counter frequencies up to 227.3 MHz. It operates from a 3.3 V core supply while remaining 5.0 V tolerant on its I/O pins, a critical feature for legacy and mixed-voltage designs. A Complex Programmable Logic Device (CPLD) is a non-volatile programmable logic IC that combines multiple PAL/GAL-style AND/OR arrays with a central interconnect fabric, providing deterministic timing, instant-on behavior, and in-system programmability (ISP) via IEEE 1149.1 JTAG. Within the broader semiconductor taxonomy, a CPLD sits below FPGAs in density but above simple SPLDs/GALs in logic capacity. MAX 3000A devices specifically use EEPROM configuration cells, so they retain their logic image without external boot memory, simplifying board design versus SRAM-based FPGAs. Key features of the EPM3256AQC208-10 include MultiVolt I/O supporting 2.5 V, 3.3 V, and 5.0 V interfaces on the same die, JTAG-compliant IEEE 1149.1 boundary-scan test (BST) and ISP, four dedicated inputs for global clock/clear/preset/OE networks, and PCI-SIG compliance for -4, -5, -6, -7, and -10 speed grades per the PCI Local Bus Specification Revision 2.2. The device offers programmable macrocell flip-flops configurable as D, T, JK, or SR operation with individual product-term clock selection. The MAX architecture employs a Lab/PLA-style logic array with a programmable interconnect matrix (PIA) that routes signals between Logic Array Blocks (LABs), guaranteeing predictable and repeatable pin-to-pin timing. Each macrocell contains a programmable AND/OR array, a flip-flop, and an I/O control block. The 10 ns pin-to-pin delay in this speed grade makes it suitable for bus interface logic, address decoding, glue logic replacement, and state-machine controllers where deterministic timing is required. Typical applications include legacy industrial control boards, telecom backplane glue logic, PCI bus interface and bridge logic, address decoding for microprocessors and DSPs, and replacement of multiple discrete TTL/CMOS logic gates. Designers working on legacy systems or repairing end-of-life Altera platforms frequently choose this part for its proven architecture and compatibility with the Quartus II 13.0 (or earlier) toolchain. When designing with this device, ensure your JTAG chain order and ISP programming voltage comply with the MAX 3000A handbook. Use the dedicated global clock pins for skew-critical paths and leverage the 5.0 V tolerant I/O when bridging to legacy 5 V buses. For new designs, consider migrating to MAX II (EPM240) or MAX V (5M80ZE64) devices for lower power and smaller packages. This page synthesizes distributor pricing, drop-in alternatives from the same MAX 3000A family, and practical design notes not found in the original datasheet, giving engineers a single decision-ready reference.
EPM3256AQC208-10N - 256-Macro MAX 3000A 3.3V CPLD | Altera
The Altera EPM3256AQC208-10N is a high-density, EEPROM-based Complex Programmable Logic Device (CPLD) from the legacy MAX 3000A family, housed in a 208-pin PQFP package and rated for the commercial 0C to 70C operating range. The device delivers 256 macrocells, up to 10,000 usable gates, 161 user I/Os, and a 10 ns pin-to-pin propagation delay (tpd) in the -10 speed grade. Per the MAX 3000A family datasheet, the core is fabricated on an advanced CMOS process and operates from a single 3.3 V supply while remaining 5 V-tolerant on its I/O pins. What is a CPLD? A Complex Programmable Logic Device is a non-volatile, instant-on programmable logic device that bridges the gap between discrete 74-series glue logic and larger FPGAs. The MAX architecture implements sum-of-products logic through an EEPROM-based programmable AND/OR array with distributed macrocells, giving deterministic timing, zero-configuration delay, and the ability to retain bitstream without external boot memory. In the system hierarchy, a CPLD sits above simple PLDs (PAL/GAL) but below FPGAs in density, and is widely used as interface bridging, bus decoding, and power-sequencing logic. Key features of the EPM3256AQC208-10N include in-system programmability (ISP) compliant with IEEE Std. 1532, JTAG-based boundary-scan test support via IEEE 1149.1, open-drain output option on every I/O for wired-OR control planes, and a MultiVolt I/O interface that accepts 5.0 V, 3.3 V, and 2.5 V signaling on a single device. The -10 speed grade delivers a 10 ns tpd and supports internal counter frequencies up to 227.3 MHz, sufficient for state-machine and address-decoding tasks. Architecturally, the device integrates 16 Logic Array Blocks (LABs), each containing 16 macrocells, interconnected through a low-skew programmable interconnect array (PIA). The non-volatile EEPROM configuration cell eliminates external boot PROMs and supports field upgrades through the JTAG ISP chain. Typical applications include industrial control boards, legacy peripheral glue logic, address decoding for microprocessors, asynchronous bus arbitration, I/O expansion, and pin-level signal conditioning. The 208-pin PQFP package is also popular for through-hole-friendly rework and long-life-cycle industrial equipment maintenance. When designing with this part, note that the 208-pin PQFP (28x28 mm body, 0.5 mm pitch) requires careful fan-out routing and adequate thermal relief on inner copper pours for production reflow. This page synthesizes cross-distributor pricing, same-package drop-in alternatives, and practical MAX 3000A design notes not assembled in any single manufacturer document.
EPM3256AQC208-7 - 256 Macro Cell 5K Gate MAX 3000A CPLD | Altera
The Altera EPM3256AQC208-7 is a high-performance, low-cost CMOS EEPROM-based Complex Programmable Logic Device (CPLD) from the MAX 3000A family, providing 256 macro cells, 5,000 usable gates, and up to 161 user I/Os in a 208-pin Plastic Quad Flat Pack (PQFP) package. Operating on a 3.3 V core supply, the device delivers pin-to-pin propagation delays as fast as 7.5 ns (-7 speed grade) and supports MultiVolt I/O interfacing with 5.0 V, 3.3 V, and 2.5 V logic levels. A Complex Programmable Logic Device (CPLD) is a non-volatile, electrically erasable programmable logic device that combines multiple PAL-like logic blocks on a single die with a central interconnect matrix. CPLDs sit in the programmable logic hierarchy between small SPLDs (Simple PLDs like PALs/GALs) and larger FPGAs, offering deterministic timing, instant-on behavior from on-chip EEPROM, and high-drive I/O capability — making them ideal for glue logic, bus bridging, and control-plane functions where predictable timing is critical. Key features of the EPM3256AQC208-7 include 4.5 ns pin-to-pin logic delays (at the -10 speed grade; this -7 grade is 7.5 ns), counter frequencies up to 126.6 MHz, IEEE Std. 1532-compliant in-system programmability (ISP) via a 3.3 V interface, and 16 Logic Array Blocks (LABs) interconnected by a Programmable Interconnect Array (PIA). The 208-PQFP package is a 28 mm x 28 mm surface-mount plastic quad flat pack rated for 0 °C to 70 °C commercial temperature operation. The architecture combines macro cell flip-flops with shared logic expanders, allowing designers to implement up to 256 logic functions with up to 16 product terms per macro cell. Typical applications include bus interface bridging, peripheral control, address decoding, state-machine implementation, and configuration logic for FPGA-based systems where instant-on, non-volatile storage of logic is required. The MultiVolt I/O supports mixed-voltage designs without external level shifters. When designing with this part, note that the AQC suffix indicates the commercial 0-70 °C grade in PQFP packaging. Verify PCB footprint compatibility against the 208-PQFP land pattern before layout. For new designs, the MAX II family (EPM240, EPM570) is the modern recommended successor. This page synthesizes distributor pricing, drop-in alternatives from the same MAX 3000A family, and practical design notes not consolidated on the manufacturer datasheet.
EPM3256AQC208-7N - MAX 3000A CPLD, 256 Macros, 7.5ns | Intel / Altera
The Intel (formerly Altera) EPM3256AQC208-7N is a high-performance, low-cost CMOS EEPROM-based Complex Programmable Logic Device (CPLD) from the MAX 3000A family, delivering 256 macro cells, 161 user I/Os, and a 7.5 ns pin-to-pin propagation delay in a 208-pin PQFP package. It operates from a 3.3 V core supply with multi-voltage I/O support (3.3 V or 2.5 V on VCCIO), enabling glueless interfacing to 3.3 V, 2.5 V, and 5.0 V system domains when used with 5.0-V tolerant inputs. A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic IC that sits between simple PAL/GAL devices and larger FPGAs in the programmable logic hierarchy. CPLD -> Programmable Logic -> Logic IC -> Semiconductor. The MAX 3000A family uses an EEPROM-based architecture, so designs are retained without an external configuration memory and the device powers up instantly to its programmed state, an advantage over SRAM-based FPGAs that require a configuration flash. Key features include 5,000 usable gates, a maximum internal operating frequency of 126.6 MHz, 3.3-V in-system programmability (ISP) compliant with IEEE Std. 1532, four dedicated inputs for global clock/clear/preset/OE control, and a programmable interconnect array that routes every macro cell pin to any I/O. MultiVolt I/O lets VCCIO be tied to 3.3 V or 2.5 V independently of VCCINT, supporting mixed-voltage board designs. The EPM3256AQC208-7N uses a classic MAX architecture with EEPROM configuration cells, an LAB (Logic Array Block) of 16 macro cells each, an expandable product-term allocator, and a programmable interconnect array (PIA). JTAG boundary-scan and ISP together enable board-level programming and test without removing the device, simplifying manufacturing flow. Typical applications include bus-interface glue logic in industrial controllers, address decoding and register decoding in legacy microcontroller boards, state-machine and protocol-bridge implementation in telecom backplane designs, and glue logic between processors and peripherals in 3.3 V embedded systems. The 161 available I/Os suit medium-density parallel interfaces such as 16/32-bit memory buses. When designing with this device, route VCCINT and VCCIO planes with low-impedance decoupling. Place one 0.1 uF + one 10 uF per supply pin pair, and use the Quartus (or legacy MAX+PLUS II) toolchain for fitting, timing analysis, and ISP programming. The PQFP-208 footprint requires careful soldering and inspection for production reliability. This page synthesizes distributor pricing, drop-in alternative MAX 3000A variants, comparison data, and practical design notes not found in the manufacturer datasheet.
EPM3256AQI208-10 - MAX 3000A 256-Macro CPLD, 10ns, PQFP-208 | Altera
The Altera EPM3256AQI208-10 is a high-performance, low-cost CMOS EEPROM-based Complex Programmable Logic Device (CPLD) from the MAX 3000A family, packaged in a 208-pin Plastic Quad Flat Pack (PQFP) with industrial temperature grade and 10ns pin-to-pin propagation delay. The device integrates 256 macro cells, 5,000 usable gates, and 161 user I/Os, and is rated for a maximum counter frequency of 95.2 MHz with internal counter speeds up to 227.3 MHz. It supports 3.3-V in-system programmability (ISP) via IEEE 1149.1 JTAG and MultiVolt I/O interfaces that allow the 3.3-V core to interoperate with 5.0-V, 3.3-V, and 2.5-V logic levels. A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that combines multiple PAL-style logic array blocks with a central interconnect matrix, sitting in the hierarchy between simple SPLDs/GALs and larger FPGAs. CPLDs are characterized by deterministic, near-zero standby power, instant-on behavior, and predictable timing - making them preferred for glue logic, bus interfacing, and state-machine control rather than high-density data-path processing. Key features of the EPM3256AQI208-10 include 4.5-ns pin-to-pin logic delays, a 10ns tPD in the -10 speed grade, PCI-SIG compliance per PCI Local Bus Specification Revision 2.2, and open-drain or programmable I/O standards. The MAX 3000A family is supported by the Altera Quartus development environment (legacy MAX+PLUS II also supports it). The 208-pin PQFP offers a fine-pitch gull-wing solution for boards where high I/O count is needed in a manageable surface-mount footprint. The EPM3256AQI208-10 architecture uses EEPROM configuration memory, so the design loads at power-up without external boot memory and retains programming across power cycles. Each macro cell contains a programmable AND/OR array plus a configurable flip-flop, and the logic array blocks (LABs) feed a fast programmable interconnect array (PIA) shared across the device. Typical applications include PCI bus interface glue logic, microcontroller address decoding, bus arbitration, I/O expansion, industrial control state machines, and legacy peripheral replacement. The 161 usable I/Os are sufficient for parallel interfaces, address/data bus steering, and multi-channel control planes. Designers also use this part for board-level configuration, interrupt steering, and timing-sensitive control logic where FPGAs would be overkill. When designing with the EPM3256AQI208-10, observe the MAX 3000A I/O standard selection rules and provide proper decoupling (0.1 uF per VCC pin group, plus bulk capacitance). Unused I/O pins should be left floating or driven, never tied to opposing rails. JTAG programming requires TCK/TMS/TDI/TDO pulled to defined states per IEEE 1149.1. This page consolidates distributor stock, drop-in alternative MPNs from the MAX 3000A family, and design notes not found in the standalone datasheet - including PCI compliance context, JTAG ISP considerations, and PQFP layout guidance.
EPM3256AQI208-10N - MAX 3000A CPLD, 256 Macrocells, 10ns | Altera
The Altera (Intel) EPM3256AQI208-10N is a high-density, low-cost CMOS EEPROM-based Complex Programmable Logic Device (CPLD) from the MAX 3000A family, featuring 256 macrocells, 161 user I/Os, and a 10 ns pin-to-pin propagation delay in a 208-pin Plastic Quad Flat Pack (PQFP) package. It belongs to the -10 speed grade and operates with a 3.3 V core supply while supporting MultiVolt I/O that is compatible with 5.0 V, 3.3 V, and 2.5 V logic levels on its input and output pins, eliminating the need for external level shifters in mixed-voltage designs. A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that combines multiple PAL-like Logic Array Blocks (LABs) on a single chip, connected via a programmable interconnect matrix. CPLDs occupy the architectural middle ground between simple SPLDs/PLDs and high-density FPGAs, providing deterministic timing, instant-on configuration from on-chip EEPROM, and high drive-strength outputs - ideal for glue logic, bus decoding, state-machine control, and I/O expansion. The MAX 3000A family from Altera (now Intel) was designed as a low-cost, high-performance EEPROM-based alternative to SRAM FPGAs in applications that demand predictable timing and instant-on behavior without external boot memory. Key features of the EPM3256AQI208-10N include 256 macrocells (equivalent to 5,000 usable gates), 161 user I/Os, 10 ns pin-to-pin logic delay with internal counter frequencies up to 227.3 MHz in faster grades, in-system programmability (ISP) via the IEEE 1149.1 JTAG interface, hot-socketing support, and PCI-SIG-compliant I/O timing. The -10 speed grade offers the slowest timing in the family, making it suitable for cost-sensitive designs where the absolute fastest logic delay is not required. Typical applications for this device include bus interface bridging, address decoding and latching in microcontroller/ASIC designs, glue logic for industrial control boards, peripheral I/O expansion, and legacy parallel-bus arbitration. The PQFP-208 package also allows hand-soldering or socket-based prototyping, which is useful for low-volume and educational designs. When designing with this part, ensure the JTAG chain is correctly terminated with TCK, TMS, TDI, and TDO pull-ups per the IEEE 1149.1 specification, and verify that the Quartus II or MAX+PLUS II toolchain is used for design entry because the MAX 3000A family is no longer supported by modern Intel Quartus Prime releases. Designers should also confirm that the PCI-compliant I/O timing is only guaranteed at the -4 through -7 speed grades, not at the -10 grade used here.
EPM3256AT1144-10S - MAX 3000A CPLD, 256 Macro, TQFP-144 | Intel
The Intel (formerly Altera) EPM3256AT1144-10S is a member of the MAX 3000A family of high-density, in-system programmable CMOS complex programmable logic devices (CPLDs). Housed in a 144-pin Thin Quad Flat Pack (TQFP) and offering 256 macrocells with a 10 ns pin-to-pin logic delay, this device targets glue-logic integration, bus interfacing, and state-machine consolidation in industrial, telecom, and embedded designs. The "AT" speed/power grade indicates a commercial temperature range with a moderate speed/power tradeoff suitable for general-purpose logic consolidation. A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that sits between simple PAL/GAL devices and FPGAs in the programmable logic hierarchy. It provides deterministic, instant-on logic (no external boot memory required), predictable timing (fixed pin-to-pin delays), and typically 1.8V-3.3V core operation with multi-voltage I/O support. In the broader taxonomy, the EPM3256AT1144-10S belongs to: CPLD -> programmable logic device -> programmable logic -> digital semiconductor -> integrated circuit. MAX 3000A devices use EEPROM-based configuration cells, so the bitstream is retained without a separate PROM and the device operates immediately on power-up. Key features of the EPM3256AT1144-10S include 256 macrocells organized into 16 Logic Array Blocks (LABs), a maximum of 212 user I/O pins, 5V-tolerant I/O (with the A-suffix MAX 3000A variant supporting both 3.3V PCI and 5V interfacing in the same design), 10 ns tPD (pin-to-pin delay), and in-system programmability via IEEE 1149.1 JTAG. The TQFP-144 package provides a familiar PCB land pattern that is straightforward to route on 2-layer boards and that supports standard reflow soldering profiles. The architecture pairs each macrocell with a programmable AND/OR array and a product-term allocator that distributes up to 32 product terms per macrocell, with extra product terms borrowable from neighbouring LABs. This design supports wide fan-in functions (decoders, comparators, multiplexers) and registered state machines in a single device. The MultiVolt I/O pins interface with 2.5V, 3.3V, and 5.0V buses without level shifters, simplifying mixed-voltage board designs. Typical applications for the EPM3256AT1144-10S include bus-interface bridging, peripheral I/O expansion, address decoding, custom state-machine controllers, and distributed datapath glue logic in industrial controllers, telecom line cards, point-of-sale terminals, and test-and-measurement equipment. When designing with the EPM3256AT1144-10S, ensure that the Quartus II or MAX+PLUS II design toolchain is available - the device predates the Quartus Prime MAX device support update. JTAG programming requires the TCK/TMS/TDO/TDI pins to be dedicated and the nSTATUS and CONF_DONE pins to be observed for proper in-system programming handshaking. This page synthesizes distributor pricing for the EPM3256AT1144-10S, same-footprint drop-in alternatives from the MAX 3000A family, and practical design notes not found in the manufacturer datasheet.
EPM3256ATC144-10 - 256-Macrocell CPLD, 10ns, 144-TQFP | Intel / Altera
The Intel (Altera) EPM3256ATC144-10 is a 256-macrocell CPLD from the MAX 3000A family, delivering 5,000 usable gates with a 10 ns pin-to-pin propagation delay and counter frequencies up to 95.2 MHz in a 144-pin TQFP (20x20 mm) package. It is a high-performance, low-cost CMOS EEPROM-based programmable logic device built on the Altera MAX architecture with 3.3-V in-system programmability (ISP) compliant with IEEE Std. 1532. A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that combines the deterministic timing of PAL/GAL architecture with the integration density of an FPGA. CPLDs sit in the hierarchy: programmable logic -> CPLD -> non-volatile logic device -> digital semiconductor. They are widely used as glue logic, bus bridges, and state-machine controllers where instant-on behavior and predictable timing matter more than raw gate count. Key features include 16 Logic Array Blocks (LABs) housing 256 macrocells, 116 user I/O pins with MultiVolt I/O supporting 5.0 V, 3.3 V, and 2.5 V logic interfaces, 3.3 V core supply (3.0 V to 3.6 V), in-system programmability via IEEE 1532, JTAG boundary-scan test support, and four pin-to-pin speed grades from 4.5 ns up to 10 ns. The 144-TQFP package provides ample I/O and routing for medium-density glue-logic designs. The MAX 3000A architecture uses an EEPROM-based interconnect matrix that holds configuration without an external boot PROM. Each macrocell contains a programmable flip-flop with local feedback, allowing designers to implement registered and combinatorial logic with deterministic 10 ns delays regardless of routing path length. Typical applications include bus-interface bridging (PCI/ISA glue logic), address decoding and memory mapping, state-machine control in industrial controllers, I/O expansion for microcontrollers, and reconfigurable peripheral glue logic in telecom and embedded systems. The IEEE 1532 ISP support allows in-field firmware updates via JTAG. When designing with the EPM3256ATC144-10, ensure the core supply (VCCINT) is regulated to 3.3 V +/- 10 percent and that decoupling capacitors (0.1 uF per VCC pin plus bulk) are placed within 5 mm of each supply pin to suppress switching noise during ISP. This page synthesizes distributor pricing, drop-in alternatives sourced from web data, and practical design notes not consolidated in the manufacturer datasheet, giving engineers a faster decision path than reading the 46-page PDF end-to-end.
EPM3256ATC144-10AA - MAX 3000A CPLD, 256 Macrocells, 10ns TQFP-144 | Altera
The Altera EPM3256ATC144-10AA is a member of the MAX 3000A Complex Programmable Logic Device (CPLD) family, delivering 256 macrocells, 5,000 usable gates, and a 10 ns pin-to-pin propagation delay in a 144-pin TQFP package. This commercial-temperature device operates from a 3.3 V core supply and supports 2.5 V, 3.3 V, or 5.0 V I/O operation through the multi-voltage VCCIO pins, enabling mixed-voltage interfacing without external level shifters. A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that combines multiple PAL-like macrocell blocks on a single chip with a central interconnect. Within the broader taxonomy, a CPLD is a sub-category of programmable logic devices (PLDs), which sit alongside FPGAs as the two principal families of digital logic ICs. CPLDs are typically chosen for glue logic, bus decoding, state-machine control, and boot-loading tasks where deterministic timing and instant-on non-volatile configuration are required. Key features of the EPM3256ATC144-10AA include 116 user I/O pins, in-system programmability (ISP) compliant with IEEE Std. 1532, and a typical maximum operating frequency suitable for general-purpose glue-logic and peripheral interfacing. The device is built on a 5K-gate CMOS process and supports the Quartus design tool flow for schematic, VHDL, and Verilog entry. Technically, the MAX 3000A architecture uses EEPROM configuration cells, meaning the device retains its logic implementation without an external boot PROM. The macrocell includes a programmable AND/OR array with a product-term allocator and a register that can be configured as D, T, JK, or SR flip-flop, providing flexibility for synchronous or combinatorial logic. Typical applications include bus-interface bridging (e.g., address decoding between a microcontroller and external peripherals), glue logic on legacy parallel buses, I/O expansion for ASICs and microprocessors, power-sequencing controllers, and small state-machine controllers in industrial control boards. When designing with this part, ensure that all VCCIO banks are powered before configuration begins and that JTAG pins (TCK, TMS, TDI, TDO) are properly pulled to avoid spurious configuration. Multi-voltage I/O requires that the VCCIO supply matches the driven external device; mixing 5 V and 3.3 V signals requires separate VCCIO banks. This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not consolidated in the manufacturer datasheet, giving engineers a single reference for sourcing and substitution decisions.
EPM3256ATC144-10N - 256-Macro CPLD, 10ns, 144-TQFP | Altera
The Altera EPM3256ATC144-10N is a high-density, EEPROM-based Complex Programmable Logic Device (CPLD) from the MAX 3000A family, delivering 256 macrocells and 116 user I/Os in a 144-pin TQFP package. It operates from a single 3.3 V supply and offers a pin-to-pin propagation delay of 10 ns with counter frequencies reaching 227.3 MHz. The IEEE Std. 1149.1 JTAG interface provides advanced pin-locking, while built-in boundary-scan test circuitry and IEEE Std. 1532-compliant in-system programmability enable concurrent multi-vendor ISP. A Complex Programmable Logic Device (CPLD) is a non-volatile programmable logic device that sits between discrete logic gates and FPGAs in the programmable logic hierarchy. Compared to FPGAs, CPLDs are deterministic, have predictable timing, instant-on configuration (no external boot device required), and higher pin-to-pin performance for glue-logic and interface bridging. The MAX 3000A family uses a classic EE (EEPROM) configuration cell that retains the design without power, a key advantage over SRAM-based FPGAs in industrial and automotive applications. Key features of the EPM3256ATC144-10N include 5,000 usable gates, sixteen 36-by-36-bit Logic Array Blocks (LABs), a global Clear and three global Clock pins, programmable interconnect, and user-configurable I/O standards with slew-rate control. The 144-pin TQFP package (ATC) supports surface-mount assembly and provides generous I/O for bus-intensive bridging and state-machine control tasks. Typical applications include bus-interface bridging (e.g., legacy 5 V/3.3 V glue logic), peripheral I/O expansion for microcontrollers, state-machine controllers in industrial control, address decoding in memory subsystems, and configurable peripheral replacement in telecom and instrumentation equipment. Designers use MAX 3000A devices when deterministic timing and instant-on non-volatile configuration outweigh the larger logic capacity of an FPGA. When designing with this CPLD, ensure the Quartus II design tool is used (legacy support) and that the JTAG chain is correctly ordered with TMS/TCK/TDO/TDI. Decoupling: place 0.1 µF and 10 µF capacitors close to every VCC pin to suppress switching noise on the 3.3 V rail.
EPM3256ATC144-7 - MAX 3000A 256-Macro CPLD, 7.5ns TQFP-144 | Altera
The Altera (Intel) EPM3256ATC144-7 is a 256-macrocell, 116-I/O CMOS EEPROM-based Complex Programmable Logic Device (CPLD) from the MAX 3000A family, housed in a 144-pin TQFP package with a 7.5 ns pin-to-pin propagation delay and a 144-pin TQFP (LFQFP, gull-wing) commercial-grade temperature rating of 0C to 70C. A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that combines multiple PAL/GAL-like logic blocks with a programmable interconnect matrix on a single chip. In the broader taxonomy, the CPLD sits below the FPGA (Field-Programmable Gate Array) in complexity but above discrete 74-series glue logic in integration density; the MAX 3000A family is Altera's entry-level CPLD line based on the company's classic MAX architecture using EEPROM configuration cells. Key features include 256 macrocells, 116 user I/Os, 7.5 ns pin-to-pin delay (speed grade -7), 3.3-V in-system programmability (ISP) compliant with the IEEE Std. 1532 specification, and counter frequencies up to 227.3 MHz. The device operates from a single 3.3 V core supply and supports 2.5 V, 3.3 V, or 5.0 V I/O levels through dedicated VCCINT and VCCIO pins. PCI SIG compliance is met at the -4 through -10 speed grades, making the EPM3256ATC144-7 usable in PCI Local Bus Revision 2.2 designs. Typical applications include bus-interface glue logic, address decoding, state-machine control, peripheral I/O expansion, and PCI bus target/bridge designs. The high I/O count (116) makes it well suited for replacing multiple discrete 74LS/74HC packages with a single programmable device, while the 7.5 ns delay enables interfacing with 66 MHz PCI and similar high-speed control buses. When designing with this part, plan the JTAG chain (IEEE 1149.1) early and reserve the four JTAG pins (TMS, TCK, TDI, TDO plus optional TRST). Ensure VCCINT and VCCIO decoupling uses 0.1 uF ceramic capacitors placed within 3 mm of each supply pin to suppress ISP-induced transients. This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
EPM3256ATC144-7N - MAX 3000A CPLD 256 Macro 7.5ns | Altera
The Intel / Altera EPM3256ATC144-7N is a high-performance, low-cost CMOS EEPROM-based Complex Programmable Logic Device (CPLD) from the MAX 3000A family, providing 256 macro cells, 5,000 usable gates, and 116 user I/Os in a 144-pin TQFP (commercial, 0 to 70C) package. It supports in-system programmability (ISP) via a 3.3V supply, offers 7.5ns pin-to-pin propagation delay, and operates at an internal toggle frequency up to 126.6 MHz with multi-volt I/O compatibility for 3.3V and 5.0V system interfaces. A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that combines multiple PAL-like macro cell arrays on a single chip with a programmable interconnect matrix. Within the broader taxonomy, a CPLD sits between simple SPLDs/GALs and FPGAs: it provides predictable timing, instant-on non-volatile configuration (EEPROM-based for MAX 3000A), and deterministic I/O pin-to-pin delays. CPLDs are commonly used as glue logic, bus bridges, interface translators, and state-machine controllers where low latency and instant boot behavior matter more than raw LUT density. Key features of the EPM3256ATC144-7N include a 5K gate-equivalent fabric with 16 logic array blocks (LABs), 256 macro cells each containing a programmable AND/OR array with a configurable register, and JTAG-compliant IEEE 1149.1 boundary-scan support. The device provides programmable power reduction per macro cell and a 4-pin JTAG interface for in-system programming. Operating from 3.0V to 3.6V VCCIO with internal 3.3V tolerance, the part is well suited to bridging legacy 5V logic to modern 3.3V ASICs/ASICs and microcontrollers. The MAX 3000A architecture combines a classic EEPROM-based configuration memory (so the device powers up instantly with its design loaded) with multi-level interconnect, enabling design IP portability across the MAX 3000A family. The 7.5ns tPD (pin-to-pin) figure makes it one of the faster members of the family, while still offering lower static power than larger MAX II devices for non-timing-critical glue logic. Typical applications include bus decoding and address mapping for legacy microcontrollers and x86 systems, 5V-to-3.3V level translation glue logic, peripheral control state machines (UART, I2C, SPI bridges), and PCI/cPCI bus interface bridging. Industrial designers also use the part for machine-control I/O expansion and as a hardware state machine replacing discrete 74-series logic. A practical design consideration: although the EPM3256ATC144-7N is in-system programmable, the EEPROM programming step adds ~1 second to prototype iteration; Quartus II design tools are required (legacy MAX+PLUS II also supported). For new designs where boot latency is acceptable, MAX II CPLDs offer higher density at similar price points, so the MAX 3000A remains the preferred choice for legacy pin-compatible upgrades. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, with full cross-reference and lifetime-buy guidance.
EPM3256ATC44-7 - MAX 3000A CPLD, 256 Macro, 7.5ns | Altera
The Altera (Intel PSG) EPM3256ATC44-7 is a high-performance, low-cost CMOS EEPROM-based Complex Programmable Logic Device (CPLD) from the MAX 3000A family, packaged in a 44-pin TQFP and offering 256 macro cells with a 7.5 ns pin-to-pin propagation delay. The device operates from a 3.3 V core supply with 5.0 V-tolerant I/O and supports 3.3 V in-system programmability (ISP) through the IEEE 1149.1 JTAG interface. What is a CPLD? A Complex Programmable Logic Device is a non-volatile programmable logic device that sits between simple PAL/GAL devices and high-density FPGAs in the programmable logic hierarchy. CPLDs are built from an array of macro cells, each containing a programmable AND/OR structure backed by a small register and fed by a global interconnect. They are non-volatile (retain configuration without power), have deterministic propagation delay (typically a few nanoseconds, regardless of routing), and are ideal for glue logic, address decoding, bus interfacing, and state-machine control where predictable timing matters more than raw logic density. Key features of the EPM3256ATC44-7 include 256 macro cells, 16 logic array blocks (LABs), 161 user I/Os in the 256-pin BGA version of this die (the 44-pin TQFP provides a smaller I/O count), 7.5 ns tPD, a maximum internal operating frequency up to 175.4 MHz (per device family datasheet), and 3.3 V ISP via JTAG. The device is built on a 0.30 µm CMOS EEPROM process, has multiVolt I/O supporting 2.5 V, 3.3 V, and 5.0 V interfaces, and includes open-drain output option for emulating wired-OR buses. Architecturally, the MAX 3000A family uses a programmable interconnect array (PIA) that fans out signals from any LAB to any other LAB with a single predictable delay, eliminating the routing variability of SRAM-based FPGAs. This makes the EPM3256ATC44-7 particularly well suited to time-critical decoder and interface logic. The 44-pin TQFP variant is a low-pin-count member of the family that still benefits from the full die's logic capacity. Typical applications include 5 V-to-3.3 V bus bridging in industrial controllers, address decoding and chip-select generation in legacy 68k and x86 systems, peripheral I/O expansion for microcontrollers lacking sufficient GPIO, and glue logic in point-of-sale terminals, instrumentation front-ends, and telecom line cards. The deterministic timing and non-volatile configuration also suit safety-critical and industrial equipment where the device must boot into a known state without external configuration memory. When designing with the EPM3256ATC44-7, observe 3.3 V VCCIO constraints, decouple all four VCC/GND pairs with 0.1 µF ceramics placed within 5 mm of the pins, and use the JTAG chain for both ISP programming and boundary-scan test. The 44-pin TQFP exposes only a subset of the device's macro I/Os, so verify in Quartus/MAX+PLUS II that all signals you intend to assign fit the 44-pin package before committing to layout. This page synthesizes the manufacturer datasheet specifications, current distributor stock and pricing, drop-in package-compatible alternatives, and practical design notes not collected in any single manufacturer document, helping engineers evaluate the EPM3256ATC44-7 for both new designs and legacy support.
EPM3256ATI144-10 - MAX 3000A 256-Macrocell 10ns CPLD | Intel
The Intel (formerly Altera) EPM3256ATI144-10 is a high-performance, low-cost CMOS EEPROM-based Complex Programmable Logic Device (CPLD) from the MAX 3000A family, offering 256 macrocells, 116 user I/Os, and a 10 ns pin-to-pin propagation delay in a 144-pin TQFP (20x20 mm) industrial-temperature package. A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that sits between small discrete logic gates (74-series) and large FPGAs in the programmable logic hierarchy. It provides predictable timing, instant-on operation from on-chip EEPROM, and is well suited to glue logic, bus interface, and state-machine functions. The MAX 3000A family uses a classic MAX architecture with 16 Logic Array Blocks (LABs), each containing 16 macrocells interconnected by a programmable interconnect array (PIA). Key features include 3.3V in-system programmability (ISP) compliant with IEEE Std. 1532, MultiVolt I/O supporting 1.8V/2.5V/3.3V/5.0V mixed-voltage interfacing, 5,000 typical usable gates, 116 user I/O pins, and a maximum toggle frequency of 95.2 MHz. The device operates from a single 3.0V to 3.6V supply with industrial temperature range of -40°C to +85°C. PCI-compatible I/O drive and programmable slew-rate control make it suitable for board-level bus applications. The EPM3256ATI144-10 leverages EEPROM-based configuration cells for instant-on behavior with no external boot memory required, predictable deterministic routing delays that simplify static timing analysis, and JTAG-based IEEE 1149.1 boundary-scan support for board testability. Designers can target the part with the legacy Altera MAX+PLUS II or the modern Quartus II toolchain. Typical applications include bus-interface bridges, address decoding and glue logic for legacy microcontrollers, peripheral controllers (UART, SPI, I2C bridges), industrial control boards, and PCI add-in card glue logic. Its instant-on, deterministic timing, and 116 I/O make it a versatile choice for medium-complexity logic consolidation. When designing with this device, ensure JTAG chain integrity (TDI/TDO/TMS/TCK pull-ups per IEEE 1149.1), respect the 3.3V VCCINT tolerance, and use Quartus II 13.0 SP1 or MAX+PLUS II for legacy design flows. Note that new designs should generally migrate to MAX II or MAX V families. This page synthesizes distributor availability, drop-in same-family alternatives, and practical design notes not consolidated on a single manufacturer page.